CN105522749B - Hydraulic press pushes adjustable point of oil path block of speed and speed regulating method - Google Patents
Hydraulic press pushes adjustable point of oil path block of speed and speed regulating method Download PDFInfo
- Publication number
- CN105522749B CN105522749B CN201510851283.5A CN201510851283A CN105522749B CN 105522749 B CN105522749 B CN 105522749B CN 201510851283 A CN201510851283 A CN 201510851283A CN 105522749 B CN105522749 B CN 105522749B
- Authority
- CN
- China
- Prior art keywords
- oil
- pressure
- valve
- speed
- sliding block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Presses (AREA)
Abstract
Adjustable point of oil path block of speed is pushed the invention discloses a kind of hydraulic press, the first inserted valve, the second inserted valve, the first oil pressure sensor, the second oil pressure sensor, the first solenoid directional control valve and the second solenoid directional control valve including oil path block block and on oil path block block, the speed regulating method of the present invention, comprises the following steps：1) sliding block fast downlink, 2) sliding block middling speed is descending, 3) sliding block work is entered, 4) sliding block stops descending, 5) when pressure needed for product is less than hydraulic press nominal pressure 1/3rd, starting step 1) high-speed procedure, 6) when pressure needed for product be less than hydraulic press nominal pressure 2/3rds when, starting step 2) middling speed program.Point oil path block compact conformation of the present invention, speed regulating method is convenient and reliable, deformation force adjust automatically slide block down speed that can be different according to needed for pressing process, improves production efficiency, reduces the use cost of equipment.It is very easy to use, reduce energy resource consumption.
Description
Technical field
The present invention relates to a kind of hydraulic control system of hydraulic press, especially a kind of control hydraulic machine slide block down speed
Divide oil path block and speed regulating method, belong to technical field of forging and pressing equipment.
Background technology
Modern hydraulic machine uses the beam type of four post three or tower structure, and the auxiliary oil cylinder of master cylinder and both sides is disposed side by side on
On crossbeam, master cylinder is plunger cylinder, and auxiliary oil cylinder is piston oil-cylinder, and auxiliary oil cylinder is additionally operable to master cylinder in addition to for loading
Plunger backhaul.The output end of existing triplex structure hydraulic press working connection block is divided to the two of oil clot by flowline connection point oil clot
Individual output end respectively enters the epicoele of master cylinder and two auxiliary oil cylinders, and the plunger of master cylinder and the piston rod of auxiliary oil cylinder promote sliding block
It is descending, the forming of workpiece is completed by mould.And hydraulic press is used for the loading forces such as thin plate stretch forming or hot forming not
Big process.During stretch forming or hot forming etc., the load when upper mould is just pressed onto workpiece is relatively low, therefore sliding block is pushed
Shi Suoxu loading force is smaller.Because the pressure oil of working connection block respectively enters the epicoele of master cylinder and two auxiliary oil cylinders, sliding block
Descending pressing speed still keep normality, in order to improve production efficiency, relatively low need to further speed up pushing for sliding block loading
During speed, only by the flow that increases separate unit hydraulic pump or increase hydraulic pump quantity, it could increase working connection flow and reach and add
The purpose of speed.Thus also need to increase hydraulic pump drive power of motor or increase motor quantity, increase control valve specification and pipe
The latus rectum on road, causes increase equipment cost and use cost.
The content of the invention
Adjustable point of oil path block of speed and speed regulating method are pushed it is an object of the invention to provide a kind of hydraulic press, can basis
Different deformation force adjust automatically slide block down speed needed for workpiece pressing process, improves production efficiency, and reduction makes
Use cost.
The present invention is achieved by the following technical programs：
A kind of hydraulic press pushes adjustable point of oil path block of speed, including oil path block block and on oil path block block
One inserted valve, the second inserted valve, the first oil pressure sensor, the second oil pressure sensor, the first solenoid directional control valve and the second electromagnetism are changed
To valve, the working connection output end of working connection block is connected with the first inserted valve input, the second inserted valve input respectively, and second inserts
Dress valve output end is connected with master cylinder epicoele, and the first inserted valve output end is connected with two auxiliary oil cylinder epicoeles respectively, two secondary oil
The oil circuit of cylinder cavity of resorption converges to be connected with the auxiliary oil cylinder output end of working connection block afterwards, the first inserted valve control end and the first electromagnetic switch
Valve output end is connected, and the second inserted valve control end is connected with the second solenoid directional control valve output end, the first solenoid directional control valve input
It is connected after being connected with the second solenoid directional control valve input with the control output end of working connection block.
A kind of hydraulic press pushes the speed regulating method of adjustable point of oil path block of speed, comprises the following steps：
1) sliding block fast downlink
First solenoid directional control valve obtains electric, and its valve element moves to upper；Second solenoid directional control valve dead electricity, its valve element moves to bottom,
So that the first inserting valve core is closed, the second inserting valve core is opened；The pressure oil exported from working connection output end all passes through
Second inserted valve inputs master cylinder epicoele, and master cylinder plunger promotes sliding block fast downlink, and two auxiliary oil cylinder piston rods are in servo-actuated
State is descending with master cylinder plunger, the oil pressure reduction of two auxiliary oil cylinder upper cavity pressure oil, the auxiliary oil cylinder being connected with auxiliary oil cylinder epicoele
Replenishing valve opens oil-filled to auxiliary oil cylinder epicoele, i.e., master cylinder leads to pressure oil two auxiliary oil cylinder topping ups of loading and is servo-actuated, and promotes sliding block fast
Speed is descending；
2) sliding block middling speed is descending
Mould descending beginning pressing component of the slipper push on the downside of it, system oil pressure rise；When system oil pressure is increased to
After the oil pressure of one oil pressure sensor setting, the second solenoid directional control valve obtains electric, and its valve element moves to upper；First solenoid directional control valve loses
Electricity, its valve element moves to bottom；First inserting valve core is opened, and the pressure oil exported from working connection output end is all inserted by first
Fill valve and input two auxiliary oil cylinder epicoeles, two auxiliary oil cylinder piston-rod lower ends promote sliding blocks with less than step 1) speed middling speed under
OK；Master cylinder plunger is descending with two auxiliary oil cylinder piston rods in servo-actuated state, the oil pressure reduction of master cylinder upper cavity pressure oil, with
The master cylinder replenishing valve of master cylinder epicoele connection opens oil-filled to master cylinder epicoele, i.e., two auxiliary oil cylinders lead to pressure oil and load main oil
Cylinder topping up is servo-actuated, and promotes sliding block middling speed descending；
3) sliding block work is entered
Mould descending continuation pressing component of the slipper push on the downside of it, system oil pressure is constantly raised；When system oil pressure rise
After the oil pressure set to the second oil pressure sensor, master cylinder replenishing valve and auxiliary oil cylinder replenishing valve are turned off, the first solenoid directional control valve
With the equal dead electricity of the second solenoid directional control valve, corresponding valve element moves to upper；First inserting valve core and the second inserting valve core
Open, the pressure oil exported from working connection output end respectively enters master cylinder epicoele and two auxiliary oil cylinder epicoeles, and sliding block is with work
Enter speed and complete compacting to workpiece at a slow speed；
4) sliding block stops descending
First solenoid directional control valve and the second solenoid directional control valve it is electric, corresponding valve element moves to upper；First inserted valve
Valve element and the second inserting valve core are turned off, and master cylinder plunger and two auxiliary oil cylinder piston rods stop movement, until pressurize knot
The backhaul of beam sliding block completes a pressure processing；
5) when pressure needed for press worked product is less than hydraulic press nominal pressure 1/3rd, high-speed procedure pressure is started
Converted products, according to step 1) program carry out pressure processing, i.e. master cylinder and lead to pressure oil and load two auxiliary oil cylinder topping ups to be servo-actuated
Mode until completing pressure processing, sliding block stops descending rear master cylinder pressurize and terminates off-load, and sliding block backhaul stops completing once
Pressure processing；
6) when pressure needed for press worked product is less than hydraulic press nominal pressure 2/3rds, middling speed programmed pressure is started
Converted products, according to step 2) program carry out pressure processing, i.e., two auxiliary oil cylinder and lead to pressure oil loading master cylinder topping up being servo-actuated
Mode until completing pressure processing, sliding block stops descending rear master cylinder pressurize and terminates off-load, and sliding block backhaul stops completing once
Pressure processing.
The purpose of the present invention can also further be realized by following technical measures.
Foregoing hydraulic press pushes adjustable point of oil path block of speed, wherein connecing the first oil by the first inserted valve output end
The second oil pressure sensor is connect by pressure sensor, the second inserted valve output end.
Foregoing hydraulic press pushes adjustable point of oil path block of speed, wherein first solenoid directional control valve and the second electromagnetism are changed
It is two four-way electromagnetic reversing valves to valve.
Foregoing hydraulic press pushes adjustable point of oil path block of speed, wherein first oil pressure sensor and the second oil pressure are passed
The adjustable control oil pressure range of sensor is 10MPa~25MPa；The range of flow of first inserted valve and the second inserted valve is equal
For 450~500l/min.
The hydraulic press of the present invention pushes adjustable point of oil path block compact conformation of speed, and speed regulating method is convenient and reliable, passes through two
The different oil pressure map of individual oil pressure sensor, starts corresponding solenoid directional control valve and opens or close to control to insert valve core accordingly
Close, realize that master cylinder leads to pressure oil loading, two auxiliary oil cylinder topping ups are servo-actuated or two auxiliary oil cylinders lead to pressure oil loading, master cylinder and filled
F.F., middling speed and the work that liquid is servo-actuated or master cylinder and the logical pressure oil of two auxiliary oil cylinders are loaded enter three kinds of load modes, so that root
According to deformation force adjust automatically slide block down speed different needed for pressing process, it is not necessary to hydraulic pump drive electricity need to be increased
The latus rectum of acc power or increase motor quantity, increase control valve model and pipeline.Production efficiency is improved, equipment is reduced
Use cost.The present invention can also set up setting knob on the control panel, can according to needed for press worked product pressure size
Difference, setting knob is screwed into corresponding master cylinder and leads to that pressure oil loading, two auxiliary oil cylinder topping ups are servo-actuated or two auxiliary oil cylinders
The mode of logical pressure oil loading, downstream rate is loaded with the sliding block needed for obtaining.
Advantages of the present invention and feature, will be illustrated and explained by the non-limitative illustration of preferred embodiment below,
These embodiments, are only provided as an example referring to the drawings.
Brief description of the drawings
Fig. 1 is the hydraulic schematic diagram of the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
As shown in figure 1, the present invention includes oil path block block 10 and the first inserted valve 1 on oil path block block 10, the
Two inserted valves 2, the first oil pressure sensor 3, the second oil pressure sensor 4, the first solenoid directional control valve 5 and the second solenoid directional control valve 6, it is main
The working connection output end 201 of oil path block 20 is connected with the first inserted valve input 11, the second inserted valve input 21 respectively, and second
Inserted valve output end 22 is connected with the epicoele of master cylinder 7, and the first inserted valve output end 12 is connected with two epicoeles of auxiliary oil cylinder 8 respectively,
Auxiliary oil cylinder output end 202 corresponding with working connection block 20 is connected two cavity of resorptions of auxiliary oil cylinder 8 respectively, the first inserted valve control end 13 with
First solenoid directional control valve output end 52 is connected, and the second inserted valve control end 23 is connected with the second solenoid directional control valve output end 62, the
The phase of control output end 203 after one solenoid directional control valve input 51 and the second solenoid directional control valve input 61 are connected with working connection block
Even.Connect by first inserted valve output end 12 and connect the second oil pressure sensor by first oil pressure sensor 3, the second inserted valve output end 22
4。
First solenoid directional control valve 5 and the second solenoid directional control valve 6 are two four-way electromagnetic reversing valves.First oil pressure sensor
3 and second the adjustable control oil pressure range of oil pressure sensor 4 be 10MPa~25MPa；First inserted valve 1 and the second inserted valve 2
Range of flow be 450~500l/min.
Hydraulic press pushes the speed regulating method of adjustable point of oil path block of speed, comprises the following steps：
1) fast downlink of sliding block 30
First solenoid directional control valve 5 obtains electric, and its valve element moves to upper；The dead electricity of second solenoid directional control valve 6, its valve element is moved to down
Position so that the valve element of the first inserted valve 1 is closed, the valve element of the second inserted valve 2 is opened；The pressure oil exported from working connection output end 201
The epicoele of master cylinder 7 is all inputted by the second inserted valve 2, master cylinder plunger 71 promotes the fast downlink of sliding block 30, two auxiliary oil cylinders
Piston rod 81 is descending with master cylinder plunger 71 in servo-actuated state, the oil pressure reduction of two upper cavity pressures of auxiliary oil cylinder 8 oil, with pair oil
The auxiliary oil cylinder replenishing valve 40 of the epicoele of cylinder 8 connection opens oil-filled to the epicoele of auxiliary oil cylinder 8, i.e., master cylinder 7 leads to pressure oil loading, two pairs
The topping up of oil cylinder 8 is servo-actuated, and promotes the fast downlink of sliding block 30.If master cylinder 7 and two same cylinder diameters of auxiliary oil cylinder 8, under sliding block 30 is quick
Scanning frequency degree is 3 times of existing hydraulic press.
2) middling speed of sliding block 30 is descending
Sliding block 30 promotes the descending beginning pressing component of mould on the downside of it, system oil pressure rise；When system oil pressure is increased to
After the oil pressure of first oil pressure sensor 3 setting, the second solenoid directional control valve 6 obtains electric, and its valve element moves to upper；First solenoid directional control valve
5 dead electricity, its valve element moves to bottom；The valve element of first inserted valve 1 is opened, and the pressure oil exported from working connection output end 201 is all logical
Cross the first inserted valve 1 and input two epicoeles of auxiliary oil cylinder 8, two lower ends of auxiliary oil cylinder piston rod 81 promote sliding block 30 with less than step 1)
Speed middling speed it is descending.Master cylinder plunger 71 is descending with two auxiliary oil cylinder piston rods 81 in servo-actuated state, the epicoele pressure of master cylinder 7
The oil pressure reduction of power oil, the master cylinder replenishing valve 50 being connected with master cylinder epicoele opens oil-filled to the epicoele of master cylinder 7, i.e., two pairs
Oil cylinder 8 leads to pressure oil loading master cylinder 7 topping up and is servo-actuated, and promotes the middling speed of sliding block 30 descending.If master cylinder 7 and two auxiliary oil cylinders 8 are same
Cylinder diameter, then the fast downlink speed of sliding block 30 is 1.5 times of existing hydraulic press.
3) work of sliding block 30 is entered
Sliding block 30 promotes the descending continuation pressing component of mould on the downside of it, and system oil pressure is constantly raised；When system oil pressure liter
After the oil pressure of up to the second oil pressure sensor 4 setting, master cylinder replenishing valve 50 and auxiliary oil cylinder replenishing valve 40 are turned off, the first electromagnetism
The equal dead electricity of 5 and second solenoid directional control valve of reversal valve 6, corresponding valve element moves to upper；The valve element of first inserted valve 1 and the second inserting
The valve element of valve 2 is opened, and the pressure oil exported from working connection output end 201 is respectively enterd on the epicoele of master cylinder 7 and two auxiliary oil cylinders 8
Chamber, sliding block 30 completes at a slow speed the compacting to workpiece with work speed.
4) sliding block 30 stops descending
First solenoid directional control valve 5 and the second solenoid directional control valve 6 it is electric, corresponding valve element moves to upper；First inserting
Valve core and the second inserting valve core are turned off, and master cylinder plunger 71 and two auxiliary oil cylinder piston rods 81 stop movement, until
Pressurize terminates the backhaul of sliding block 30 and completes a pressure processing；
5) when pressure needed for press worked product is less than hydraulic press nominal pressure 1/3rd, by setting on control panel
Determine knob and be screwed into the position that master cylinder 7 leads to pressure oil loading, two topping ups of auxiliary oil cylinder 8 are servo-actuated, start high-speed procedure pressure processing
Product, according to step 1) program carry out pressure processing, i.e. master cylinder 7 and lead to pressure oil to load two topping ups of auxiliary oil cylinder 8 servo-actuated
Mode is until complete pressure processing, and sliding block 30 stops the descending pressurize of rear master cylinder 7 and terminates off-load, and the backhaul of sliding block 30 stops completing one
Secondary pressure processing；
6) when pressure needed for press worked product is less than hydraulic press nominal pressure 2/3rds, by setting on control panel
Determine knob and be screwed into two servo-actuated positions of the loading of the pressure oil of auxiliary oil cylinder 8, the topping up of master cylinder 7, start the processing production of middling speed programmed pressure
Product, according to step 2) program carry out pressure processing, i.e., two auxiliary oil cylinder 8 and lead to the servo-actuated side of pressure oil loading master cylinder 7 topping up
Formula is until complete pressure processing, and sliding block 30 stops the descending pressurize of rear master cylinder 7 and terminates off-load, and the backhaul of sliding block 30 stops completing once
Pressure processing.
In addition to the implementation, the present invention can also have other embodiment, all use equivalent substitution or equivalent transformation shape
Into technical scheme, all fall within the protection domain of application claims.
Claims (2)
1. a kind of hydraulic press pushes adjustable point of oil path block of speed, including oil path block block and on oil path block block first
Inserted valve, the second inserted valve, the first oil pressure sensor, the second oil pressure sensor, the first solenoid directional control valve and the second electromagnetic switch
Valve, it is characterised in that the working connection output end of working connection block respectively with the first inserted valve input, the second inserted valve input phase
Even, the second inserted valve output end is connected with master cylinder epicoele, and the first inserted valve output end is connected with two auxiliary oil cylinder epicoeles respectively,
Auxiliary oil cylinder output end corresponding with working connection block is connected two auxiliary oil cylinder cavity of resorptions respectively, the first inserted valve control end and the first electromagnetism
Reversal valve output end is connected, and the second inserted valve control end is connected with the second solenoid directional control valve output end, and the first solenoid directional control valve is defeated
Enter end and the second solenoid directional control valve input be connected afterwards be connected with the control output end of working connection block；The first inserted valve output
Other connect in end connects the second oil pressure sensor by the first oil pressure sensor, the second inserted valve output end.
2. a kind of hydraulic press as claimed in claim 1 pushes the speed regulating method of adjustable point of oil path block of speed, it is characterised in that：
Comprise the following steps：
1) sliding block fast downlink
First solenoid directional control valve obtains electric, and its valve element moves to upper；Second solenoid directional control valve dead electricity, its valve element moves to bottom so that
First inserting valve core is closed, and the second inserting valve core is opened；The pressure oil exported from working connection output end all passes through second
Inserted valve inputs master cylinder epicoele, and master cylinder plunger promotes sliding block fast downlink, and two auxiliary oil cylinder piston rods are in servo-actuated state
It is descending with master cylinder plunger, the oil pressure reduction of two auxiliary oil cylinder upper cavity pressure oil, the auxiliary oil cylinder topping up being connected with auxiliary oil cylinder epicoele
Valve opens oil-filled to auxiliary oil cylinder epicoele, i.e., master cylinder leads to pressure oil two auxiliary oil cylinder topping ups of loading and is servo-actuated, under promoting sliding block quick
OK；
2) sliding block middling speed is descending
Mould descending beginning pressing component of the slipper push on the downside of it, system oil pressure rise；When system oil pressure is increased to the first oil
After the oil pressure of pressure sensor setting, the second solenoid directional control valve obtains electric, and its valve element moves to upper；First solenoid directional control valve dead electricity, its
Valve element moves to bottom；First inserting valve core is opened, and the pressure oil exported from working connection output end all passes through the first inserted valve
Input two auxiliary oil cylinder epicoeles, two auxiliary oil cylinder piston-rod lower ends promote sliding blocks with less than step 1) speed middling speed it is descending；It is main
Cylinder Plunger is descending with two auxiliary oil cylinder piston rods in servo-actuated state, the oil pressure reduction of master cylinder upper cavity pressure oil, with main oil
The master cylinder replenishing valve of cylinder epicoele connection opens oil-filled to master cylinder epicoele, i.e., two auxiliary oil cylinders lead to pressure oil loading master cylinder and filled
Liquid is servo-actuated, and promotes sliding block middling speed descending；
3) sliding block work is entered
Mould descending continuation pressing component of the slipper push on the downside of it, system oil pressure is constantly raised；When system oil pressure is increased to
After the oil pressure of two oil pressure sensors setting, master cylinder replenishing valve and auxiliary oil cylinder replenishing valve are turned off, the first solenoid directional control valve and the
The equal dead electricity of two solenoid directional control valves, corresponding valve element moves to bottom；First inserting valve core and the second inserting valve core are opened,
The pressure oil exported from working connection output end respectively enters master cylinder epicoele and two auxiliary oil cylinder epicoeles, and sliding block is slow with work speed
Speed completes the compacting to workpiece；
4) sliding block stops descending
First solenoid directional control valve and the second solenoid directional control valve it is electric, corresponding valve element moves to upper；First inserting valve core
It is turned off with the second inserting valve core, master cylinder plunger and two auxiliary oil cylinder piston rods stop movement, until pressurize terminates to slide
Block backhaul completes a pressure processing；
5) when pressure needed for press worked product is less than hydraulic press nominal pressure 1/3rd, high-speed procedure pressure processing is started
Product, according to step 1) program carry out pressure processing, i.e. master cylinder and lead to pressure oil loading the servo-actuated side of two auxiliary oil cylinder topping ups
Formula is until complete pressure processing, and sliding block stops descending rear master cylinder pressurize and terminates off-load, and sliding block backhaul stops completing a pressure
Processing；
6) when pressure needed for press worked product is less than hydraulic press nominal pressure 2/3rds, the processing of middling speed programmed pressure is started
Product, according to step 2) program carry out pressure processing, i.e., two auxiliary oil cylinder and lead to the servo-actuated side of pressure oil loading master cylinder topping up
Formula is until complete pressure processing, and sliding block stops descending rear master cylinder pressurize and terminates off-load, and sliding block backhaul stops completing a pressure
Processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510851283.5A CN105522749B (en) | 2015-11-30 | 2015-11-30 | Hydraulic press pushes adjustable point of oil path block of speed and speed regulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510851283.5A CN105522749B (en) | 2015-11-30 | 2015-11-30 | Hydraulic press pushes adjustable point of oil path block of speed and speed regulating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105522749A CN105522749A (en) | 2016-04-27 |
| CN105522749B true CN105522749B (en) | 2017-10-27 |
Family
ID=55765431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510851283.5A Active CN105522749B (en) | 2015-11-30 | 2015-11-30 | Hydraulic press pushes adjustable point of oil path block of speed and speed regulating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105522749B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI678277B (en) * | 2017-03-21 | 2019-12-01 | 德律科技股份有限公司 | Barrier detection method and anti-collision method of pressing bed |
| CN109910336A (en) * | 2018-12-29 | 2019-06-21 | 合肥合锻智能制造股份有限公司 | High beat hydraulic press |
| CN113634809B (en) * | 2021-10-13 | 2022-01-25 | 山东泰丰智能控制股份有限公司 | Control system for solving cutter clamping fault |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1003469A1 (en) * | 1981-04-16 | 1987-12-23 | Экспериментальный научно-исследовательский институт кузнечно-прессового машиностроения | Hydraulic press control system |
| CN101168305A (en) * | 2007-11-22 | 2008-04-30 | 天津市天锻压力机有限公司 | Hydraulic machine slide block down speed control structure |
| CN201151207Y (en) * | 2007-11-22 | 2008-11-19 | 天津市天锻压力机有限公司 | Structure for adjusting speed of slider by proportional servo valve |
| CN203623016U (en) * | 2013-11-04 | 2014-06-04 | 江苏国力锻压机床有限公司 | Hydraulic system of hydraulic machine |
| CN205149010U (en) * | 2015-11-30 | 2016-04-13 | 沃得精机(中国)有限公司 | Hydraulic press pushes down speed adjustable and divides oil circuit piece |
-
2015
- 2015-11-30 CN CN201510851283.5A patent/CN105522749B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1003469A1 (en) * | 1981-04-16 | 1987-12-23 | Экспериментальный научно-исследовательский институт кузнечно-прессового машиностроения | Hydraulic press control system |
| CN101168305A (en) * | 2007-11-22 | 2008-04-30 | 天津市天锻压力机有限公司 | Hydraulic machine slide block down speed control structure |
| CN201151207Y (en) * | 2007-11-22 | 2008-11-19 | 天津市天锻压力机有限公司 | Structure for adjusting speed of slider by proportional servo valve |
| CN203623016U (en) * | 2013-11-04 | 2014-06-04 | 江苏国力锻压机床有限公司 | Hydraulic system of hydraulic machine |
| CN205149010U (en) * | 2015-11-30 | 2016-04-13 | 沃得精机(中国)有限公司 | Hydraulic press pushes down speed adjustable and divides oil circuit piece |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105522749A (en) | 2016-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105522749B (en) | Hydraulic press pushes adjustable point of oil path block of speed and speed regulating method | |
| CN203331450U (en) | Pressure and speed fast conversion hydraulic system of multi-cylinder-structure pressing machine | |
| EP3290718A1 (en) | Hydraulic fast forging unit | |
| CN106151128B (en) | Digital display type high-low pump riveting machine hydraulic station and riveting process | |
| CN106270098B (en) | A kind of gamut mold clamping force is with the variable internal high-pressure forming machine of internal pressure | |
| CN204099304U (en) | A kind of baby press hydraulic driving system | |
| CN104948538A (en) | Plate bending machine servo hydraulic system and construction method thereof | |
| CN108150468B (en) | Hydraulic press hydraulic system capable of quickly and stably realizing local loading | |
| CN105058833A (en) | Numerical control hydraulic machine | |
| CN104006015A (en) | Pressure maintaining and speed stabilizing hydraulic system of hydraulic machine | |
| CN102758806B (en) | Crossbeam press multi-hydraulic cushion synchronous control system | |
| CN104100590A (en) | Jacking hydraulic system and jacking and back-jacking methods thereof | |
| CN209195842U (en) | A kind of hydraulic control circuit quickly forged | |
| CN108638568A (en) | A kind of energy-conserving hydraulic for hydraulic press pads control system | |
| CN102029316A (en) | Hydraulic control system of internal high-pressure forming machine | |
| CN205149010U (en) | Hydraulic press pushes down speed adjustable and divides oil circuit piece | |
| CN109058196B (en) | Novel energy-saving rapid forging machine hydraulic system and control method thereof | |
| CN207701490U (en) | A kind of electro-hydraulic numerical control Synchronous Bending machine hydraulic system of double servo-pump controls | |
| CN103691794A (en) | Self-pressurization forming method for hollow parts | |
| CN101514948B (en) | Quick pressurization system for steel pipe hydrostatic tester | |
| CN205937265U (en) | Digital display high -low pump riveter hydraulic pressure station | |
| CN204998014U (en) | Numerical control hydraulic press | |
| CN208686685U (en) | A kind of novel energy-conserving rapid forge machine hydraulic system | |
| CN203809385U (en) | Device for providing loads for tested hydraulic system with oil cylinder as output end | |
| CN203835828U (en) | Oil tank volume expansion improvement structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |